StudioMaster EF12 Full-Range Speaker

Key Features of StudioMaster EF12

1. Two-Way Full Range Design – Powerful and Balanced Sound

The StudioMaster EF12 features a professional two-way loudspeaker configuration consisting of a 12-inch low-frequency woofer and a compression driver.

The crossover system distributes audio frequencies between the individual drivers, supporting balanced and detailed sound reproduction.

• Low Frequencies: The 12-inch woofer delivers full-bodied, powerful and well-defined bass.
• Mid Frequencies: Supports clear reproduction of vocals, speech and musical instruments.
• High Frequencies: The 44.4mm compression driver reproduces bright and detailed high-frequency content.

This two-way configuration makes the EF12 suitable for music playback, karaoke, live performances and professional auditorium sound systems.

2. 12-Inch Woofer – Powerful and Full-Bodied Bass

The StudioMaster EF12 is equipped with a 12-inch (30cm) low-frequency driver featuring a 75mm voice coil.

Its 12-inch woofer supports full-bodied bass reproduction, helping reproduce kick drums, bass guitars and other low-frequency instruments.

The 75mm voice coil supports the driver's power-handling capability, making it suitable for professional sound reinforcement applications.

The 12-inch configuration provides a practical balance between audio performance and overall enclosure dimensions, making the EF12 suitable for karaoke rooms, concert stages and auditoriums.

3. 44.4mm Compression Driver – Clear Vocals and Detailed Highs

The StudioMaster EF12 features a compression driver with a 44.4mm voice coil and a 1-inch throat.

The HF driver reproduces upper-midrange and high-frequency content, supporting clear vocals, musical instruments and detailed audio reproduction.

The 1-inch horn helps direct sound toward the intended listening area, working together with the 80° × 50° coverage pattern.

This configuration supports clear vocal reproduction, making the EF12 suitable for karaoke, live performances and professional sound systems requiring intelligible audio.

4. 400W Power Handling – Professional Audio Performance

The StudioMaster EF12 offers 400W power handling according to the published product specifications.

This power capability supports professional applications in karaoke systems, concert stages, auditoriums and event venues.

As a passive loudspeaker, the EF12 requires an external power amplifier.

Users can select a compatible amplifier according to the speaker's power and impedance requirements to achieve suitable operating performance.

When combined with a mixer and DSP processor, sound engineers can adjust EQ, balance tonal characteristics and optimize audio signals for different environments.

5. 60Hz–20kHz Frequency Response – Clear and Balanced Sound

The StudioMaster EF12 offers a frequency response of 60Hz–20kHz, supporting audio reproduction across low, mid and high frequencies.

Its frequency response helps reproduce different audio elements:

• Low Frequencies: Supports kick drums, bass guitars and other low-frequency instruments.
• Mid Frequencies: Delivers clear vocals, speech and musical instruments.
• High Frequencies: Provides brightness and detail for vocals, cymbals and high-frequency instruments.

With this frequency response, the EF12 can be used independently in suitable configurations or combined with a subwoofer to enhance low-frequency performance.

6. 130dB Peak SPL – Powerful Sound Reinforcement Performance

The StudioMaster EF12 features a published peak sound pressure level of up to 130dB.

This specification supports professional sound reinforcement applications in concert stages, auditoriums and performance environments.

Combined with its 98dB sensitivity, the EF12 is designed to deliver powerful and clear audio reproduction.

Proper amplifier matching, signal processing and speaker positioning are recommended to achieve optimal performance.

7. 98dB Sensitivity – Efficient Audio Performance

The StudioMaster EF12 features a sensitivity rating of 98dB according to the published specifications.

Sensitivity indicates the sound pressure level produced by a loudspeaker when supplied with reference input power under specified measurement conditions.

This specification provides useful information for sound engineers when selecting amplifiers and designing professional audio systems.

Combined with its 12-inch woofer and 400W power handling, the EF12 is suitable for a wide range of applications, from professional karaoke to live sound reinforcement.

8. 80° × 50° Coverage Pattern – Controlled Sound Distribution

The StudioMaster EF12 features a directional horn with an 80° horizontal × 50° vertical coverage pattern (H × V).

The horn design helps control sound dispersion and direct audio toward the intended listening area.

The 80° horizontal coverage supports sound distribution across the width of a room, while the 50° vertical coverage helps control dispersion in the vertical direction.

This configuration makes the EF12 suitable for professional stage systems, auditoriums, restaurants and karaoke installations.

9. Passive Design – Flexible System Integration

The StudioMaster EF12 is a passive full-range loudspeaker that requires an external power amplifier.

This design provides flexibility when selecting amplification equipment and building professional sound systems according to specific requirements.

The EF12 can be integrated with:

• Power Amplifier: Provides suitable amplification for the loudspeaker.
• Mixer: Combines and controls signals from microphones, instruments and playback devices.
• Digital Mixer or DSP: Provides EQ adjustment, signal processing and sound optimization.
• Microphones: Supports karaoke, speech and live performance applications.
• Subwoofer: Enhances low-frequency reproduction in systems requiring additional bass output.

Proper system integration helps maintain stable operation and optimize loudspeaker performance.

10. Professional Enclosure Design – Suitable for Different Installation Environments

The StudioMaster EF12 features dimensions of 377 × 408 × 625mm and weighs 22.5kg.

Its enclosure is designed to accommodate the 12-inch woofer configuration, making it suitable for professional karaoke rooms, auditoriums and concert stages.

Its overall dimensions allow the speaker to be integrated into various sound system configurations, including permanent installations and mobile performance setups.

As a full-range loudspeaker, the EF12 can function as a main speaker in suitable systems or be combined with a subwoofer for enhanced bass performance.

11. Professional Applications of StudioMaster EF12

With its 12-inch woofer, 400W power handling, 130dB peak SPL, 98dB sensitivity and 80° × 50° coverage pattern, the StudioMaster EF12 is suitable for various applications:

• Professional concert sound systems.
• Home karaoke rooms.
• Commercial karaoke installations.
• Auditoriums and conference rooms.
• Restaurants, wedding halls and event venues.
• DJ and live music performances.
• Acoustic cafés and music lounges.
• Bars, clubs and entertainment venues.
• Mobile sound reinforcement systems.
• Professional PA systems.
• Subwoofer-integrated sound systems.

12. StudioMaster EF12 – Professional Passive 12-Inch Full Range Speaker

Combining a professional two-way loudspeaker configuration, a 12-inch woofer with a 75mm voice coil, a compression driver with a 44.4mm voice coil and 400W power handling, the StudioMaster EF12 provides a practical full-range solution for professional sound reinforcement systems.

Its 60Hz–20kHz frequency response, 98dB sensitivity, 130dB peak SPL and 80° × 50° coverage pattern support powerful, clear and controlled audio reproduction.

The passive design provides flexibility when integrating the speaker with external power amplifiers, mixers and professional signal processors.

The StudioMaster EF12 is an excellent choice for professional karaoke systems, concert stages, auditoriums, wedding venues, acoustic cafés and PA sound reinforcement applications.

StudioMaster EF12 – Powerful Sound, Clear Vocals, Professional Performance.